The cause of the error is a problem with the Microsoft® Windows®
Installer program used by the software. It produces the error when the
registry entry AllocateCDRoms at the following subkey is set to a value
of 1.

Warning!
Problems caused by improperly editing the Windows registry could render
your computer operating system unusable. Microsoft has provided a
wealth of critical information you need to know about the registry in
the Microsoft Knowledge Base at http://support.microsoft.com/support.

Use the Microsoft® Registry Editor only at your own risk and only after
backing up the registry as well as the system.dat and user.dat files as
outlined in ARTICLE-ID: Q132332 "How to Back Up the Registry" in the
Microsoft Knowledge Base. Additional information about the registry is
also contained in the Help topics in the Microsoft Registry Editor.

Note:
If the registry editor fails to open the threat may have modified the
registry to prevent access to the registry editor. Security Response
has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.